Part
2-Writing
the
1620
FORTRAN
Program
The FORTRAN Coding Form
This
part
of
the
manual
explains
how
each
FORTRAN
statement
is
prepared
and
how
they
can
be
combined
to solve problems
in
engineering
and
science.
The
terms Processor, Source Program,
Object
Program,
and
Compile
Time
are
used
throughout
this
part
of
the
manual.
If
you
are
not
certain of
the
meaning
of
each
of these terms, you should review
INTRODUCTION
TO
FORTRAN
in
Part
1.
In
the
previous section of
the
manual
we
learned
that
a
FORTRAN
program
solves a
problem
by
carrying
out
the
instructions given
by
a series of statements.
These
statements
can
be
arranged
into four groups:
Input/output
statements
that
read
data
into
the
program
or
print
and
punch
the
results of
the
program.
Control
statements
that
may
determine
the
sequence
in
which
the
state-
ments will
be
followed or provide
the
program
with
the ability to
deal
with
predefined exceptions to
the
procedure.
Specification statements
that
tell
the
FORTRAN
program
the
amount
and
kind
of
input
and
output
data
it
will process.
Arithmetic
statements
that
specify
the
mathematical calculations to
be
performed.
A
FORTRAN
coding form is available for use as a
guide
when
preparing
a source
program. Besides providing a written record of
the
program,
the
form facilitates
the
subsequent
transfer of
the
source statements to cards
or
paper
tape
(see
THE
FORTRAN
CARD).
IBM
FORTRAN
CODING
FORM
Program
_______
_
Coded
By
_______
_
Dale
___
_
Checked
By
_______
_
Identification
Page
__
of
__
FORTRAN STATEMENT
The
FORTRAN
coding form consists of
21
lines,
each
of
which
is
used
to record
one
FORTRAN
statement.
Each
number, letter,
and
special
character
of a
statement
is written
in
a
separate
column. Statements
must
be
written
one to a line
and
must
start
and
finish on
the
same line. Any
number
of blanks
may
be
included
in
a state-
ment.
Writing the 1620
FORTRAN
Program
.Z1
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